Tree stand



FIG. 1 is a Perspective view of a tree stand showing my new design;

FIG. 2 is a Top plan view thereof;

FIG. 3 is a Bottom plan view thereof; and,

FIG. 4 is a front elevational view thereof, the rear elevational view, left side elevational view, and right side elevational view being identical. 

CLAIM The ornamental design for a tree stand, as shown and described. 